Question

A boat travels 30 km downstream in 2 hours and the same distance upstream in 5 hours. Find the speed of the boat in still water and the speed of the stream.

A Boat speed = 15 km/h, stream speed = 45 km/h
B Boat speed = 17.5 km/h, stream speed = 1.5 km/h
C Boat speed = 10.5 km/h, stream speed = 4.5 km/h
D Boat speed = 17.5 km/h, stream speed = 3.5 km/h
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